Turn off "Potential resource leak" warning, as it gives too many false positives

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1431332 13f79535-47bb-0310-9956-ffa450edef68
Fix resource leak that led to locked files.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1431344 13f79535-47bb-0310-9956-ffa450edef68
Invalidate the cache entry if a previously missing resource is now present.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1431349 13f79535-47bb-0310-9956-ffa450edef68